- 寫一個(gè)生成式能夠產(chǎn)生的數(shù)據(jù)為: 1, 4, 27, 256, 3125,…, 9**9
list1 = (x**x for x in range(1, 10))
- 寫一個(gè)生成式能夠產(chǎn)生1-10中所有半徑是偶數(shù)的圓的面積
circle_area = (3.14*r**2 for r in range(1, 11) if not r & 1)
- 寫一個(gè)生成式交換字典的鍵和值，產(chǎn)生一個(gè)新的字典
dict1 = {}
exchange_key_value = dict((dict1[key], key) for key in dict1)
# 方法二
dict2 = {dict1[key]: key for key in dict1}
- 為函數(shù)寫一個(gè)裝飾器，在函數(shù)執(zhí)行之后輸出 after
def add_after(fn):
def function(*args, **kwargs):
print(fn(*args, **kwargs))
return 'after'
return function
@add_after
def print_sum(x, y):
return x+y
print(print_sum(100, 200))
- 為函數(shù)寫一個(gè)裝飾器，把函數(shù)的返回值 +100 然后再返回。
def add_hundred(fn):
def function(*args, **kwargs):
return fn(*args, **kwargs)+100
return function
@add_hundred
def func(x, y):
return x+y
print(func(100, 200))
- 寫一個(gè)裝飾器@tag要求滿足如下功能:
def tag(fn):
def function(*args, **kwargs):
return '<p>'+fn(*args, **kwargs)+'</p>'
return function
@tag
def render(text):
# 執(zhí)行其他操作
return text
@tag
def render2():
return 'abc'
print(render('Hello')) # 打印出: <p>Hello</p>
print(render2()) # 打印出: <p>abc</p>
- 寫一個(gè)裝飾器@tag要求滿足如下功能(需要使用帶參的裝飾器，自己先自學(xué)正在一下):
def tag(name):
def func(fn):
def function(*args, **kwargs):
return '<{}>'.format(name)+fn(*args, **kwargs)+'</{}>'.format(name)
return function
return func
@tag(name='p')
def render(text):
return text
@tag(name='div')
def render2():
return 'abc'
print(render('Hello')) # <p>Hello</p>
print(render2()) # <div>abc</div>
- 為函數(shù)寫一個(gè)裝飾器，根據(jù)參數(shù)不同做不同操作。
flag為True，則 讓原函數(shù)執(zhí)行后返回值加100，并返回。
flag為False，則 讓原函數(shù)執(zhí)行后返回值減100，并返回。
def decorator(flag: bool):
def func(fn):
def function(*args, **kwargs):
if flag:
return fn(*args, **kwargs)+100
return fn(*args, **kwargs)-100
return function
return func
@decorator(flag=False)
def func1(*args):
sum1 = 0
for num in args:
sum1 += num
return sum1
print(func1(100, 200, 300)) # 500
- 寫一個(gè)斗地主發(fā)牌器
import random
def landlord():
card_type = ['?', '?', '?', '?']
card_values = ['A', '2', '3', '4', '5', '6', '7', '8', '9', '10', 'J', 'Q', 'K']
cards = ['大王', '小王']
cards.extend([x+y for x in card_type for y in card_values])
random.shuffle(cards)
laird_card = random.choice(cards)
print('底牌:', cards[0:3])
print('player1:', cards[3:20])
print('player2:', cards[21:38])
print('player3:', cards[39:54])
pass
